(5/24/13) A Minnesota man says La Crosse Police may have mishandled evidence that would have cleared him of charges that he murdered a camera store owner and his son.

Attorneys for 40-year-old Jeffrey Lepsch of Dakota say they either want the homicide charges dropped – or a surveillance video not be admitted as evidence. Lepsch is scheduled to go on trial July 23rd in the shooting deaths of a 56-year-old Paul Petras and his 19-year-old son A-J – plus the theft of 20-thousand dollars in camera equipment from May's Photo. A witness told officers he saw man behind a desk at May's photo close to 4:30 last September 15th. Police said they had surveillance video showing Lepsch leaving the store around three – but his attorneys said the video ended around 3:30, before the witness saw the man in the store. A state agent wrote that parts of the video were recorded over by the time police obtained it. Lepsch's attorneys say the video should not be used against their client, saying it would violate his due process rights.